Process and apparatus for removing sand from wells



E. B. SYMONS.

PROCESS AND APPARATUS FOR REMOVING SAND FROM WELLS.

APPLICATION FILED SEPT-3,1921.

Patented 00th 17, 1922,.

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PRQCESS AND AIPJPARATUS FOR REMOVING SAND FROM WELLS.

Application filed September @1921. Serial no. 498,513.

To all whom it may comem;

Be it known that I, EDGAR B. Srluons, a citizen of the United States, residing at Hollywood, in the county of Los Angeles' mygrinvention applied to a well. 20

ig. 2 is a vertlcalsection of the pumping apparatus in the well.

Like'parts are indicated by llke characters in all figures' A. is the lower casing of the well perfo-- It extends deeply into the water bearing sand strata. 7

VB is the upper casing of the well which extends down to the water bearing sand strata and is not perforated.

ed" within the'upper .casing. C are bowls of the pump. C are blades or runuers keyed I to the shaft C which is rotated at a high velocity by means of the belt driven pulley C which is operated by an suitable power source not here shown. 8 are stationary blades which arrest the whirling motion set up by the blades C and cause a straight .up-

ward flow of the water. Any kind of a 40 pump can h e-used. V

- D is a delivery pipe extending upward "and enclosing the shaft C connecting with the over-flow tank E. p

F is a pipeextending from the over-flow tank almost to the bottom of the well shaft,

F is a valve in the pipe F. The pipe T ex-,

tends -far below the perforated end of the pump intake. I 1

- The use and operation of my invention are-as follows:

The object of my invention is to keep: the lower section of a deep well ,freefrompermanent deposits of sand or in other words, tokeep the well fromfillingup with sand and ll have shown it asapplied tojadeepj' C is a two stage centrifugalpump mountwell containing a relatively long section of perforated well casing which has been driven down deep into the water bearing sand strata. Well up in this well and far above the bottom.is the lower preferabl perforated inlet end pipe of the pump. en the Well has thus been established and the penforated casing driven to a satisfactory. depth and the pump is started, a very considerable amount of sand is carried out by the pump with the first flow of water, so much-so that it often takes several days before a clear fl'owof water is established. This will notv occur until the sand has ceased to flow in quantity throughthe perforations A. For a considerable time the fio-w of water will continue and be relatively clear of sand,

carrying ofi, however, by its large volume and slow current most of the sand which works in through. the perforations in the well casing. But after a few months, sufficient sand will have gotten through these perforations and will have fallen down through the water currenti to create. a de:

posit in the bottom of the perforated casin'g. This deposit graduallyincreases m depth and becomes more and more .solid until eventually the action of the pump is,-

greatly interfered'with and the freedom of the flowof water in the casing is'greatly.

diminished. The efiective length pf-the per- ,forated wall casing is reduced and this'ca'sing may be even in time completely filled so as to stop the flow of water altogether.

In the drawin ..l[ have arbitraril indicated a level at J at which the san might stand or to whichthe deposit might rise without the application of niy invention. Under these circumstances the action of the well would be greatly interfered with.' The stirring pipe which extends down from the overflow tank almost to the bottomof the perforated well casing will Whensuplplied with water tend to stir up and break t e deposit of sand in the bottom ofthe perforated casing. Any desired pressure can be applied but ordinarily and particularly in dee wells the weight of Water in the pipe issu cient. The sand will be stirred up and moved about and forced out some of it perhaps throu h the perforallpns but in any event it wille.

set in motion-so that the flow of water in the well pump will carry such sand withit until substantially the whole of the perforated casing has been cleared. When the int . ing.

water begins to flow in .such substantially clear manner the Water may be cut off from the stirring pipe until the well shows signs of again tending to fill up in its lower cas- The drawings here shown are intended to illustrate the application of my invention to perforated section of the.

a well where the pump inleading pipe is about one hundred feet down and the-end of the stirring. pipe is about three hundred feet down so, that there is a very long interval of perforated casing between the end of the pump pipe and the end of the stirring pipe. The object of the stirring pipe is to keep the sand in this lower end of the perforated pump casing so stirred up that it will be for the most part carried ofl with the water current pumped out and thus overcome the objections which otherwise would result from the steady deposit of some portion of the sand which enters the perforated casing with the water in of such section and a sediment stirring device comprising a pipe adapted to deliver water under pressure to a lower level of such well section and means for supplying.

water to such pipe.

2. A means for maintaining a flow of water from a deep well coprising a perforated well casing in the water bearing strata, a pump adapted to pump water from an upper level of such perforated casing and a sediment stirring device comprising a pipe adapted to deliver water under pressure to a lower level of such perforated casing and means for supplying. water to such pipe.

- 3, A means for maintaining a flow of water from a deep well comprising a-perforated well casing in. the water bearing strata, a pump whose receiving endis placed near and adapted to irece1ve water from an upper level of such perforated casing anda sediment stirrm devicecompris- 4 pressure near a lower level of such perforated, section and means for supplying water to such, pipe.

ing a pipe adapted to deliver water under 4. A means for maintalningiaf-flow of water -from a deep well comprising a well. section in the I water bearing. strata, a pump adap' to pump water from: an'upper leading pipe messes levelof such section and a sediment stirring of such well section and meansfor Supply-' ing water to such pipe, said pumpprovided with an inleading pipe having a perforated end through which the water is drawn.

5. A. means for maintaining a flow of. water from a deep well comprising a perforated well casing in the water bearing strata, a pump adapted to pump water from an upper level. of such perforated casing,- and a sediment stirring device comprising a pipe adapted to deliver water under-pressure to a lower level of such perforated casing and means for supplying water to such pipe, said p'ump provided with aninleading pipe having a perforated end through which the water is drawn.

6. A means 'for maintaining a flow of water from a deep well comprising a per forated well casing in the water bearing strata; a pump whose receiving end is placed n'earfand adapted ,to receive water from an upper level of such perforated casing and a sediment stirring device comprising a pipe adapted/to deliver water under pressure near a lpwer level-of such perforated section and means for supplying water to such pipe, said pump provided with aninhaving a perforated end through'which the wateris drawn.

7. The'process of, maintaining a flow of water. from a deep':- well which penetrates' the water bearing strata and preventing the accumulation of sediment in the bottom thereof which consists in pumping the water directly from an upper level of the water bearing strata and forcing a current of water under pressure into a lower level of such water bearing strata so as to keep the sediment which otherwise. would solidify in the bottom of such water bearing section in a disturbed state so that it can be fcar-- ried ofi' with the water through the pump.

8.. The process of maintaining a flow of water from a deep well which penetrates water bearing strata and preventing the accumulation of sediment in'the bottom thereof which consists in pumping the water directly from-an upper level of water-in" the well and forcing a current of water '-'under pressure into a lower level of such water in. the well so as'to keep the'sediment which'otherwise woufd settle in the .bottom of such well in'a disturbed state so that it 'canjb carried off with the water through Signed at Chicao, county of cook and State of Illinois, tis flfith day of'Auigust,

EDGAR B. emons. 

